21493628

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{4013}}^1$

素因数の和:4133

約数の個数: 24

約数和(自身を含む): 40910688

約数和(自身を除く): 19417060

約数列:

[1, 2, 4, 13, 26, 52, 103, 206, 412, 1339, 2678, 4013, 5356, 8026, 16052, 52169, 104338, 208676, 413339, 826678, 1653356, 5373407, 10746814, 21493628]

約数ペア:

[(1, 21493628), (2, 10746814), (4, 5373407), (13, 1653356), (26, 826678), (52, 413339), (103, 208676), (206, 104338), (412, 52169), (1339, 16052), (2678, 8026), (4013, 5356)]